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GeoGebra
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GeoGebra
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(3cos2y ; y)
Author:
Sin Min
GeoGebra
New Resources
双心四边形
撒针估算面积实验
折扣
异形操场
正方形雪花图案
Discover Resources
proof 64 潘研
兩圓
讀量杯上的刻度 (練習)
正五角錐(旋轉，實體、透視)
均分
Discover Topics
Trigonometry
Limits
Division
Tangent Line or Tangent
Cone